Difference between revisions of "4inch HDMI LCD (C)"

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|caption=4inch Resistive Touch Screen LCD(C), HDMI interface, IPS Screen, Designed for Raspberry Pi
 
|caption=4inch Resistive Touch Screen LCD(C), HDMI interface, IPS Screen, Designed for Raspberry Pi
 
|category=[[:Category:OLEDs / LCDs|OLEDs / LCDs]], [[:Category:LCD|LCD]], [[:Category:Raspberry Pi LCD|Raspberry Pi LCD]]
 
|category=[[:Category:OLEDs / LCDs|OLEDs / LCDs]], [[:Category:LCD|LCD]], [[:Category:Raspberry Pi LCD|Raspberry Pi LCD]]

Revision as of 11:05, 12 May 2022

4inch HDMI LCD (C)
720x720, IPS
540px-4inch-HDMI-LCD-C-1.jpg

4inch Resistive Touch Screen LCD(C), HDMI interface, IPS Screen, Designed for Raspberry Pi
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Introduction

Features

  • 4-inch IPS screen, hardware resolution is 720 × 720.
  • 5-point capacitive touch, tempered glass panel, hardness up to 6H.
  • When used with Raspberry Pi, it supports Raspberry Pi OS / Ubuntu / Kali and Retropie.
  • Ubuntu is supported when used with Jetson Nano.
  • When used as a computer monitor, it supports Windows 11/10/8.1/8/7.
  • Onboard dual touch circuit, optional USB Type-C or I2C touch, it has more application scenarios.
  • With 3.5mm audio and speaker interface, it support HDMI audio output.

Featured Design

Design(1).jpg

Use with Raspberry Pi

Hardware Connection

1. Set the touch switch on the back of the screen to "I2C".
2. Fix the Raspberry Pi to the screen through the copper posts, and pay attention to aligning the position of the ejector pins.
3. Connect the HDMI port of the Raspberry Pi to the LCD.
Note: Raspberry Pi Zero / Zero 2 W needs an additional HDMI cable for connection.
The hardware connection is as shown below (Pi 4 and Pi 3B+):
4inch-HDMI-LCD-C-Manual-02.jpg
4inch-HDMI-LCD-C-Manual-03.jpg

Software Connection

Raspberry Pi OS / Ubuntu / Kali and Retropie systems for Raspberry Pi.
Please download the latest version of the image from the Raspberry Pi official website.
When the LCD works on systems such as Raspberry Pi, the resolution must be manually set, otherwise it will cause abnormal display. When the LCD works on the PC version of Windows system, there is no such problem.
1.Please download the latest version of the image from the Raspberry Pi official website. Download the compressed file to your PC, and extract the .img file.
2.Connect the TF card to the PC and use SDFormattersoftware to format the TF card.
3.Open the Win32DiskImager software, select the system image prepared in step 1, and click write to burn the system image.
4.After the programming is completed, open the config.txt file in the root directory of the TF card, and add the following code at the end of config.txt

dtparam=i2c_arm=on
dtoverlay=waveshare-4dpic-3b
dtoverlay=waveshare-4dpic-4b
hdmi_force_hotplug=1 
config_hdmi_boost=10
hdmi_group=2 
hdmi_mode=87 
hdmi_timings=720 0 100 20 100 720 0 20 8 20 0 0 0 60 0 48000000 6
start_x=0
gpu_mem=128

5.Download the 4inch HDMI LCD (C) DTBO file and extract 2 dtbo files. Copy the 2 files to the overlays directory (/boot/overlays/)
6.Save, eject the TF card safely, and insert the TF card into the Raspberry Pi.
7.Power on the Raspberry Pi and wait for more than ten seconds to display normally.

Use with PC

The LCD can work on PC version Windows 11 /10 / 8.1 / 8 / 7 system.
Instructions:
1) Switch the touch interface selector switch to "USB".
2) Connect the Power&Touch interface of the LCD to the USB interface of the PC.
3) Connect the Display port of the LCD to the HDMI port of the PC.

Use with Jetson Nano

1) Switch the touch interface selector switch to "USB".
2) Connect the Power&Touch interface of the LCD to the USB interface of the Jetson Nano.
3) Connect the Display port of the LCD to the HDMI port of the Jetson Nano.

FAQ

 Answer:
Add the following command to /boot/config.txt
disable_splash=1
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 Answer:
Replace the custom image with the image in this directory /usr/share/plymouth/themes/pix/splash.png
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 Answer:
You can enter the following commands in the terminal of the Raspberry Pi system:
sudo -E rpi-eeprom-config --edit

As shown in the figure below, change the 0 in the original DISABLE_HDMI to 1. If there is no such sentence, please add it directly, save the file and restart the system to block this picture. 7inchC modification.png
Note: This method currently only supports Raspberry Pi OS system. If there is a problem with other systems, you need to use Raspberry Pi OS to turn off the DISABLE_HDMI of Raspberry Pi 4B, and then use other systems to display it.

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Anti-Piracy

Since the first-generation Raspberry Pi released, Waveshare has been working on designing, developing, and producing various fantastic touch LCDs for the Pi. Unfortunately, there are quite a few pirated/knock-off products in the market. They're usually some poor copies of our early hardware revisions, and comes with none support service.

To avoid becoming a victim of pirated products, please pay attention to the following features when purchasing:

RPi-LCD-Anti-Piracy.jpg

(Click to enlarge)

Beware of knock-offs

Please note that we've found some poor copies of this item in the market. They are usually made of inferior materials and shipped without any testing.

You might be wondering if the one you're watching or you've purchased in other non-official stores is original, feel free to contact us.

Support